Regular Expression Operator about tiedot HOT 9 CLOSED

Hello!

I am very glad to hear that you like tiedot.

Did you mean using regular expression to filter certain attribute in query result? For example, matching /(good)|(average)/ in document's "grade".

from tiedot.

Yes, or more complex: /[AF]/ in document's "grade". The high and low performers. Or again, to do wildcard searching,such as

• all names ending in the letter "n": /n$/
• all codes beginning with a letter and ending in a digit: /^[0-9].*[A-Z]$/

Since Go has a regexp package (http://golang.org/pkg/regexp/), I thought it would be pretty easy and would be nice addition the current eq, range, and set operations. In SQL I use wildcards a lot and noticed the absence in tiedot right away.

from tiedot.

Oh! I see.

In that case, I am afraid that index scan cannot help much at this stage, regex filter can be applied in collection scan (which is still quite fast).

from tiedot.

So would it look something like this?

q='{"re": "Go|Clojure", "in": ["Title"]}'

to find every title with either "Go" or "Clojure" in the title.

Thanks for considering,
Cecil

from tiedot.

That sounds like a great idea, let's do it.

from tiedot.

Fixed in d76e5aa thanks to NoahShen

from tiedot.

Great! Don't forget to update the docs to show how to use it!

On Thu, Nov 7, 2013 at 1:47 AM, Howard Guo [email protected] wrote:

Fixed in d76e5aahttps://github.com/HouzuoGuo/tiedot/commit/d76e5aa969b2e3cfb0a98cce9b77c077345741c9thanks to NoahShen

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/27#issuecomment-27941459
.

from tiedot.

will do

from tiedot.

Completed 9a5026a

from tiedot.